Inspection of vertical air deflector drive motor and circuit

Shown is the structure of the vertical air guide drive motor and circuit . After the CPU receives the remote control signal that controls the action of the conductor plate,
the pulse signal output by the @ pin has a certain timing relationship and provides drive for the four windings of the air guide plate motor. Pulse, the motor rotates and drives
the wind deflector to swing, and the waveform of the drive signal is shown in the figure.